Barcelona, the cosmopolitan capital of Spain’s Catalonia region, is known for its art and architecture. The fantastical Sagrada Família church and other modernist landmarks designed by Antoni Gaudí dot the city. Museu Picasso and Fundació Joan Miró feature modern art by their namesakes. City history museum MUHBA, includes several Roman archaeological sites.

Barcelona, the cosmopolitan capital of Spain’s Catalonia region, is known for its art and architecture. The fantastical Sagrada Família church and other modernist landmarks designed by Antoni Gaudí dot the city. Museu Picasso and Fundació Joan Miró feature modern art by their namesakes. City history museum MUHBA, includes several Roman archaeological sites.

Marseille, a port city in southern France, has been a crossroads of immigration and trade since its founding by the Greeks circa 600 B.C. At its heart is the Vieux-Port (Old Port), where fishmongers sell their catch along the boat-lined quay. Basilique Notre-Dame-de-la-Garde is a Romanesque-Byzantine church. Modern landmarks include Le Corbusier’s influential Cité Radieuse complex and Zaha Hadid’s CMA CGM Tower

Florence, capital of Italy’s Tuscany region, is home to many masterpieces of Renaissance art and architecture. One of its most iconic sights is the Duomo, a cathedral with a terracotta-tiled dome engineered by Brunelleschi and a bell tower by Giotto. The Galleria dell'Accademia displays Michelangelo’s “David” sculpture. The Uffizi Gallery exhibits Botticelli’s “The Birth of Venus” and da Vinci’s “Annunciation.”

Rome is the capital city and a special comune of Italy, as well as the capital of the Lazio region. The city has been a major human settlement for almost three millennia. With 2,860,009 residents in 1,285 km², it is also the country's most populated comune.

Naples, a city in southern Italy, sits on the Bay of Naples. Nearby is Mount Vesuvius, the still-active volcano that destroyed nearby Roman town Pompeii. Dating to the 2nd millennium B.C., Naples has centuries of important art and architecture. The city's cathedral, the Duomo di San Gennaro, is filled with frescoes. Other major landmarks include the lavish Royal Palace and Castel Nuovo, a 13th-century castle

Sicily has been shaped by countless civilizations, from Greek to Byzantine to Roman. When it fell under Spain’s purview in the 17th century, it was celebrated as one of Europe’s ten great cities. Surrounded by undulating mountains, orange and olive groves and vineyards are plentiful. During World War II, Messina was the destination of the unofficial “Race to Messina” between US General Patton and British Field Marshall Montgomery. In the end, Patton arrived just hours before his British comrade, receiving credit for securing Sicily.

Athens is the capital of Greece. It was also at the heart of Ancient Greece, a powerful civilization and empire. The city is still dominated by 5th-century BC landmarks, including the Acropolis, a hilltop citadel topped with ancient buildings like the colonnaded Parthenon temple. The Acropolis Museum, along with the National Archaeological Museum, preserves sculptures, vases, jewelry and more from Ancient